Gaining-machine.



No. 724,966. BATENTBD APR. 7, 190s.

`J. M. STRUBEL'. GAINING MACHINE.

APPLICATION FILED NOV. 19, 1902.

y 3 SHELTS-SHEET;

No. 724,966. I PATENTED APRl 7, 1903. J. STRUB'EL. GAINING MACHINE.

APPLICATION FILED NOV. 19, 1902.

H0 MODEL. 3 SHEETS-SHEET 2;.

JTW/fontes? N0. 724,966. 1 PATENTBD APR. '1, 190s.

' J. M. STRUBBL.

GAINING MACHINE.

. APPLICATION FILED NOV. 19, 1'902. i

N0' MODEL. l I 3 SHEETS-fsHEET 3.

UNITED STATES PATENT EEICE.

JOSEPH M. STRUBEL, OF YOUNGSTOWN, OHIO.

'eArNINe-IVIACHINE.v

SPECIFICATION forming part of Letters Patent No. 724,966, dated April 7,1903.-

Application and November 19,l 1902. seria] No. 131,994.. (No man.)

To all whom it may oorwernn Be it known that I, JOSEPH MJSTRBEL, a*citizen of the United States, residing at .Youngstown, in the county ofMahoning and State of Ohio, have invented certain new and usefulImprovements in Gaining-Machines; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention -relates to woodworking-machines of the type designed forgain or mortise cutting Work, and more particularly to a machineespecially constructed and adapted for cutting the gains or mortises ina doorjamb and door forthe reception of the hinge or butt leaves. y

Ordinarily the cutting of hinge gaius orV mortises through theinstrumentalityof the usual tools is a laborious operation, besidesbeing subject to considerable inaccuracy, 'depending upon the skill andcare of the operator. In the carrying out of ihisoperation thecarpenters usually employ a try-square, a knife for scoring or markingpurposes, two gages to determine the size and depth of the gain ormortise, a chisel, and a hammer for driving the chisel in cutting outthe wood. The use of the separate tools necessarily consumesconsiderable time in the cutting out of a set ofggains or mortises forafsingle door and doorway, besides not permitting the carpenter toproperly compensate for inaccuracies in the position of the jamb-such,for instance, as the same being out of plumb either perpendicularly orhorizontally, as frequently occurs, and under whichconditions the doorwill bind or swing unevenly. This always has to be corrected by planingthe door or its casing.

The present invention is designed to er1-l tirely overcome the aboveobjections to the ordinary method of cutting hinge gains or mortises,while at the same time providing a machine-whereby this operation may beentirely completed with absolute accuracy in a few minutes time.

With this general object in View the invention contemplates a simple,practical, and reliable form of hinge gaining or cutting machine readilyand accurately applied to a doorjamb or door andl embodying everyadjustment necessary to. the same for cutting gains or mortises ofdifferentividths, lengths, and depths.

Also the machine contemplated by the present invention embodies meansfor being trued or squared against the jamb o1' door edge to insure thecutting of the gain or mortise at perfect right angles thereto,and,furthermore, the machine provides for insuring the cutting out ofthe gain or mortise in perfect parallelism to the face of the jamb ordoor in the event of the latter being out ot' true transversely. This isaccomplished through the medium of a tiltable mounting for one of thecutters.

With these and many other objects in view,

which will more readily appear as the nature of the? invention is betterunderstood, the same consists in the novel construction, combination,.and arrangement of parts, which will be hereinafter "more fullydescribed, illustrated, and claimed. v The essential features of theinvention involved in the novel mounting and adjustment of the separateright-angularly-related cutters' are necessarily susceptible tomodication without departing from the spirit or scope of the invention;but a preferred embodiment of the latter -is shown in the accompanyingdrawings, in Which- Figurel is a 'front elevation of a hinge-Vgain-cutting machine constructed in accordthe cutter constituting thecut-out chiseLi Fig. 6 is a detail sectional View on the line 6 6 ofFig. 1showing more plainly the tiltable mounting and adjustment for thecarriage-base carrying the cut-out chisel. Fig.

7 is a detail sectional view showing more plainly the function of thesquaring-guides in conjunction with the door-jamb, which projects beyondthe casing, to insure a squaring of the machine against such jamb andnot against the casing. Fig. S is a sectional elevation on the line 8 8of Fig. 2. Fig. f) is a detail in perspective of the form ofcuttercarrying slide associated with the base member of each carriage.Fig. 10 is a detail sectional view on the line lO 10 of Fig. G. Figs.1l, 12, and 13 are diagrammatic views of the face or edge of adoor-jamb, showing the positions to which the cutters are adjusted inscoring and cutting out the hinge gain or seat.

Like reference characters designate corresponding parts throughouttheseveral figures of the drawings.

In carrying out the present invention there is employed in connectionwith a common supporting-frame a pair of right-angularlyrelated cutters,one designed to perform the function of a shaping and scoring knife andthe other as a cut-out chisel or knife for removing the body of materialto provide the gain or mortise. These separate cutters are also designedto have an independent mounting upon the supporting-frame and to beassociated with instrumentalities permitting of their adjustment in anumber of different directions in order that the machine may be readilyand accurately adjusted to cut gains or mortises of different widths,lengths, and depths, and, infact, meet every condition that would existin connection With this class of work. IVhile the various structuraldetails exhibited in the drawings are necessarily largely-illustrativeand susceptible to modification, still as a practical form of theinvention is shown by the drawings particular reference will now be madethereto.

The supportingframe, upon which are mounted the variousinstrumentalities of the machine, is designated in its entirety by theletter F and is designed to be of such a construction as to permit ofthe same being placed astride the door-jamb or door edge and to beclamped rigidly thereto for holding the machine rm and accurate in placewhile the scoring or cutting out of the gain or mortise is taking place.The main supporting-frame F may therefore be properly termed aslipporting clamp-frame7 and is of approximate U form in longitudinalsection, as plainly shown in Figs. 2 and 7 of the drawings.

Preferably the supporting-frame is of skeleton formation and is of ageneral rectangular shape in elevation, the same consisting of suitablyunited and braced members, certain of which perform special functions,as will be particularly pointed out. With reference to its appliedposition-for instance, upon the door-jamb-the frame F is provided at theends or, more properly speaking, at the corners thereof with therearwardly-projecting holding-arms 1, which are arranged in parallelismto each other and are disposed in oppositely-located pairs, the saidopposite pairs of the holding-arms being respectively designed to takeover or embrace the opposite side portions of the door-jamb or door.

In order to provide for securely clamping the frame to the object, theholding members or arms thereof are designed to be equipped withsuitable clam ps or clam ping means, which bind against the adjacentsides of the object. A simple and practical expedient for effecting theclamping of the frame in its applied position is shown in the drawingsand consists in associating with each pair of the holding-arms 1 aclamping-bar 2, working at the inner sides of the arms, and whose endsare suitably secured to the supporting plates or heads 3, to which areswiveled the inner ends of the clamp-screws et, passing through threadedopenings or nuts in the holding-arms 1 adjacent to the clamping'bar.This clamping equipment being the same for each pair of the holding armsor members 1, it is obvious that after the machine-frame is placedastride the edge of the object in which the gains or mortises are to becut a tightening up of the clamp-screws -1 in the several holding-armswill serve to bind the clamping-bars 2 rmly against the sides of theobject, as plainly shown in Figs. 2 and '7 of the drawings, and willthus rigidly hold the machine in place during the shaping, scoring, andcutting out of the gain.

In connection with the clamping means for holding the machine-frame uponthe object, whether such object be the door-jamb or the ydoor itself,there are also utilized as an attachment for the frame detachableguide-blocks 5, adapted to be fitted in the corners of the frame againstthe edge of the object in which the gains or Inortises are to be cut.These guide-blocks are preferably held to the rear sides of the frontguide-bars (5 through the medium of the fastening-screws or equivalentfastening devices 7 passing through such bars, whereby the said blocks 5may be removed or replaced, according to the arrangement of door-jamband casing to which the machine may be applied.

In most instances the door-jamb .I projects beyond or outside of thecasing sides, (marked C in Figs. 2 and 7 of the drawings,) andconsequently as the gains or mortises are to be cut in the face and edgeof the jamb .I it is necessary that the machine-frame be trued orsquared against such jamb and not against the casing, thereby obviatinginaccuracies in the hanging or swinging of the door, which otherwisemight occur. By reason of the employment of the guide-blocks 5 withinthe corners of the machine-frame, at one end thereof, when suchmachine-frame is placed astride the jamb, which projects beyond thecasing side C, the said guide-blocks will abut against the edge of thejamb in which the gain or mortise is to be cut and will register in theangle formed by the projection of the jamb beyond the casing. Afterfirmly placing the guide-blocks in such position, and thus squar- IOOIZO

ing or trning the frame with reference to the jamb J, the clamping-bars2 may be tightened up against the casing sides to hold the frame inposition. In other instances where there is no projection of the jambbeyond the casing sides the guide-blocks 5 may be dispensed with andremoved entirely from the frame by loosening up or taking out thefastenings 7 therefor. l

The skeleton supporting-frame F, in addition to having projected fromone side thereof the holding-arms 1, is provided at the front with theopposite parallel front guide-bars 6, arranged in proper spaced relationand extending from one end of the frame to the other, said frontguide-bars being provided with the longitudinal guideways or grooves 8,preferably of dovetail formation. Also at one end the saidsupporting-frame F is further provided with the supplemental guidebars9, which may constitute continuations of the pair of holding-arms 1 atone end of the frame and are disposed at right angles to the plane ofthe front guide-bars 6, said supplemental end guide-bars 9 being alsoprovided in the faces thereof with the longitudinally-disposed guidewaysor grooves lO, preferably of dovetail form and extending from end to endof thebars 9 for the purpose to be presently explained.

The separate right angularly disposed guide-bars 6 and 9 provide for theslidable and adjustable mounting of the front and end cutter-carriages11 and 12, respectively, which carriages in turn provide vfor theadjustable mounting of the separate right-angularly-relatedcutters-namely the shaping and scoring knife 13 and the cut-out chisel14. The individual mounting and equipment for each cutter is preferablysubstantially the same, inasmuch as each cutter is designed to have thesame number of adjustments and also to be manipulated in substantiallythe same way to preserve uni-formity in the operation of the machine toprovide for cutting out a gain or mortise.

Referring in the rst place to the mounting of the cutter constitutingthe shaping and scoring knife 13, it will be observed that the frontcarriage 11 for this cutter or knife essentially comprises a flat basemember 15, preferably in the form of a plate arranged edgewise withreference to the front of the machine-frame 5 and extending transverselyand entirely across the frame, as may be plainly seen by reference toFigs. 1, 2, and 8 of the drawings. VThe carriagealso includes,inaddition to the transversely-arranged base member or plate 15, theslidable guidingblock-s 16,-of dovetail form and slidably moving in thelongitudinal guideways or grooves 8 of the front guide-bars 6, and saidvtransverse base member of the carriage is suitably fastened to theguide-blocks 16 and may also be held rigid in proper relation totheframe through the medium of braces 17, extending from one side thereofto the blocks 16.' Other equivalent means may be employed for rigidlyuniti'ng the base member of the carriage to the guiding-blocks 16, whichconstitute the carriage-slides, and permit adjustment of the carriagelongitudinally of the supportingframe. Various expedients maybe resortedto in elfecting this longitudinal adjustment of the carriage; but thismay be accomplishedconvenient-ly through the medium of acarriage-adjusting screw 18, mounted to turn in a stationary nut 19,carried by one of the end bars 20 of the machine-frame, and having aswiveled connection 21 at its inner end with a transverse connecting-bar22, constituting a part of the framework of the carriage 11, which mayconveniently connect the opposite carriage-slides 16.

The base member or plate 15 is provided in one side thereof with aslideway 23, extending longitudinally thereof f rom end to end andpreferably formed between a pair of parallel guide-strips 24, havingundercut or beveled edges 25, providing a slideway of dovetail formwhich is designed to slidably receive therein a correspondingly-shapedcutter-carrying slide 26 in the form of a block, which in turn hasslidably interlocked therewith the cutter 13, which constitutes theshaping and scoring knife. Any suitable slidable interlocked connectionmay be provided between the cutter 13 and the slide or slideblock 26,supporting the same upon the adjustable carriage 11. A practicalconstruction for eecting this mounting is shown in the drawings andconsists in providing the cutter-carrying slideV or slide-block 26 uponthe outer side thereof with a pair of spaced shouldered keys or gibs 27,having-an interlocked slidable engagement withthe longitudinalguiding-slots 28, formed longitudinally in the main blade of the cutteror knife 13 and extending substantially the entire length thereof togive the cutter or knifev all the play that may be desired or required,

From -the foregoing it will be obvious that the adjustable mounting ofthe carriage 11 permits the same to be moved in a direction toward andfrom the edge of the object in which the gain is to be cut, while themovement of the cutter-carrying slide or slideblock 26 longitudinally ofthe carriage-base 15 permits the cutter or knife 13 to be moved up anddown (with reference to the applied position of the machine) to adaptthe same to a gain or nlortise of any length, and the independentlongitudinal movement of the cutter or knife 13 transversely 'of thecarriage-base l5 permits of the inward movement of the cutter or knifein shaping and scoring out the gain or mortise. The extent ofadjustmentl which may be necessary for the carriage 11 is accuratelydetermined through the medium of an indicating-scale 29, provided uponthe front of the frame andl conveniently upon one'or-both of the frontguide-bars 6, said scale orscales bei'ng'employed in connection withoneof the trans- IOO IIO

verse parts of the carriage, so that the same may be adjusted toward orfrom the edge of the object in which the gain is to be cut to theprecise degree required, according to the width of the gain. Acorresponding adjustment of the shaping and scoring knife 13 accordingto the length of the gain is ldetermined through the medium of thelateral knife-stops 30, which are adjustably mounted in any suitablemanner upon the carriage base or plate 15, respectively above and belowthe cutter or knife 13, as plainly shown in Fig. 8 of the drawings.These lateral knife-stops may be conveniently in the form of blocksslidably mounted upon one of the guiding-strips 24 of the slideway 23and held in any adjusted position through the medium of a set-screw orequivalent fastening 31. To insure accuracy in the adjustment of thesestops, according to the length of the gain to be cut, the strip orportion of the carriagebase upon which they are mounted is preferablyprovided with an indicating or gage scale 31". 1n connection with theadjustment and gaging of the cutter or knife 13 still further provisionis made for regulating the depth of penetration thereof into the wood.This is effected throughthe medium of adepthgage of suitable form. Inthe drawings an illustrated form of depth-gage is shown and consists ofa stop-block 32, slidably mounted upon a scaled edge portion 33 of theindividual blade itself and held to any adjusted position within theextent of such scale through the medium of a set-screw or equivalentfastening 34.

The cutter 13, constituting the shaping and scoring knife, essentiallyconsists of a main cutting-blade 35, having an inner beveled cuttingedge 36 and adjacent to and coperating with such inner beveled cuttingedge, the oppositely-located side cutter-wings 37 projecting at the sameside of the blade 35, from opposite edges thereof, and whose cuttingends are beveled to correspond tothe inner cutting end of the main blade35, thus producing a U-shaped form of cutting-head at the inner end ofthe blade 35, which provides for shaping and scoring out the ends andangles of the gain or mortise in the inanner to be further explained.

One of the objects of the present invention is to provide a constructionwherein a hammer is not employed to force either cutter into the Wood. Aseparate cutter-actuator is employed for this purpose, and referringstill to the cutter 13, constituting the shaping and scoring knife, theactuator for forcing this knife in and out with reference to thedoorjamb or object preferably consists of a screw 38, operating againstthe outer end of the cutter or knife 13 and mounted for adjustment in anut-arm 39, formed at the outer end of a movable actuator-carrier 40,which may be conveniently in the form of a bracket provided With theoppositely arranged slidehooks or equivalent slide members 41, whichslidably interlock with and work upon the inner and outer edges of thefiat base member or plate 15 of the carriage 11, thus providing a formof carrier for the actuator 38 which will have an adjustmentcorresponding to the up-and-down adjustment of the cutter 13 between theoppositely-located stops 30.

Referring to the mounting of the cutter 14, constituting the cut-outchisel or knife, the said cutter is associated with the endcuttercarriage l2. This carriage essentially consists of the flat basemember or plate 42 and the slidable guiding-blocks 43, moving in theguideways or grooves 10 of the supplemental end guide-bars 9 andconstituting the slides for the said end cutter-carriage 12. Anadvantageous feature of the invention resides in the manner ofassociating the base member or plate 42 with the slides 43 therefor, inorder that the said plate, with the attached parts, may be tilted in theevent of the face of the jamb or object being out of true in atransverse direction, and thereby permitting the gain or mortise to becut out in parallelism to the untrue face. This may be convenientlyaccomplished by providing a pivotal or hinge-joint connection 44 betweenthe inner edge of the base member or plate 42 and the carriage-slides43. (See Fig. 10.)

Any suitable type of knuckle or equivalent joint connection 44 may beprovided for the member or plate 42, whereby the same may be tilted ormoved in either direction from its ordinary right-angular dispositionwith reference to the end bars 9 of the frame F, and in order to controlthe tilting adjustment of the base member or plate 15 suitable adjustingmeans are associated therewith. These adjusting means may consist simplyof setting-screws 45, mounted in threaded nuts or openings 46, providedupon or in suitable supporting-brackets 47, rigidly attached to andolset from the carriage slidesor blocks 43 at one side of the basemember or plate 42. At one end the said setting-screws 45 have asuitable swiveled connection 46 with the said base member 42 in orderthat the latter will respond to the adjustment of the screws 45 andwillbe held set at the desired angle which may be required bythe conditionof the object to which the machine is applied. Similar to the basemember 15 of the carriage 11 the said base member 42 of the carriage 12is provided in one side thereof with a longitudinal slideway 48, whichaccommodates therein a cutter-carrying slide or slide-block 49, providedwith the offset shouldered keys or gibs 50, which slidably interlockwith the longitudinal guiding-slots 5l, formed in the blade of thecutter or knife 14. The said base member or plate 42 is also providedwith a member or portion having thereon a gagescale 52, corresponding tothe scale 31 of the carriage 1l, and also having fitted thereon thelateral knife-stops 53 in the form of adj ustable blocks held in theiradjusted spaced relation through the medium of set-screws or IOCequivalent fastening devices 54. The cutter or knife 14 is also providedWith the scaled edge portion 54a, uponwhich is adjust-ably mounted adepth-gage or gage-block 55,which corrresponds to the depth-gage 32 forthe cutteror knife 13, in order to accurately regulate the depth ofpenetration of the cutter.

The movement of the cutter 14 into and out of the gain or mortise isaccomplished throngh-` the medium of a cutter-actuator similar to thatemployed in connection with the shaping and scoring cutter, saidactuator consisting of an adjusting-screw 56, operating against theouter end of the cutter or knife 14 and mountedin a nut-arm 57, formedat the outer end of a movable actuator-carrier 5S, preferably in theform of a bracket provided lwith oppositely-located slide-hooks orequivalent slide members 5S), interlocked with and slidably engaging theside edges of the base member or plate 42. The adjustment of thecarriage 12 itself is accomplished by substantially the same means asthat employed for the carriage 11- namcly, through the medium of acarriageadjusting screw 60, Working in a stationary nut 61, fitted tothe end bar 62 of the frame and havinga swiveled connection 63 at itsinner end with a transverse connecting-bar 64. This transverseconnecting-bar 64 is a part of the carriage 12 and is rigidly connectedWith the opposite slides or blocks 43. y

Suitable explanation has already been made in reference to the clampingof the machine upon an object and the utility of the guideblocks 5 andthe tilting adjustment of the individual supporting-base of the carriage12. Hence, assuming the machine to be in its applied .position upon theobject, as shown in Figs. 2 and'of the drawings,with allof the gages orgage-stops properly set according to the scales with which they areassociated, vit Will be-observed that the carpenter first determines thewidth of the gain through the adjustment ofthe carriage 11 and thenmoves the shaping and scoring knife13 up against the lateral knifestop30, which determines the position of the shaping and scoring knife forscoring out the upper part of the gain, as lwill be indicatedvby thesuggested position I shown in diagrammatic Fig. 11. After the upper partof the gain shown in Fig. 11 is scored out by forcing the knife 13 in-Ward the knife is Withdrawn and dropped down against the lower gage 30,and then again moved into the object, as indicated'by position II indiagrammatic Fig. 12. The knife 13 therefore has entirely scored out thegain, as shown in Fig. 13,1With a .transverse cut or score between thetop and bottom edges of the gain, so that it only becomes necessary4 tooperate the cut-out chisel 14 rst in position I and then in position II,as shown in Fig. 13, which provides for lifting out the material toprovide the complete gain or mortise.

In applying the'machinc to the edge of al door it will of course only benecessary to arel range suitable filling-blocks vvithin the frame topermit of the same being clamped tightly in a position substantially asshown in Fig. 2. It will also be understood that the machine may beapplicable to such other gaining purposes as the same might be adaptedto without changing the essential features herein indicated.

From the foregoing it is thought the construction, operation, and manyadvantages of the herein-described gaining-'machine Will be readilyapparent Without further description, and it will also be understoodthat various changes in the form, proportion, and. minor details ofconstruction may be resorted to without departing from the spirit of theinvention or sacrificing any of the advantages thereof.

Having thus described the invention, What is claimed, and desired to besecured by Let' ters Patent, is-f- 1. In a machine of the classdescribed, a su pporting-frame having projected from one side thereofoppositely-arranged holding members, those at one end of theframeconstituting guides, a clamping device carried by the oppositely-locatedholding members, separate.

carriages movable in planes at right angles to each other and one ofwhich is slidably mounted upon the holding member constituting guides,and an independently-adjustable cutter associated with each carriage.

2. In a machine of the class described, a supporting-frame havingclamping means for engagement With the object, right-angularlyrelatedcutters, and separate guide-blocks tted as an attachment in the cornersat one end of the frame and arranged for engagement against a projectionbeyond the portion of the object engaged by the clamping means.

3. In a machine of the class described, a su pporting-frame havingoffset from one side thereof oppositely-arranged clamping means forengagement With the object, right-angularly related cutters, andseparate guideblocks detachably held against the inner side of the frameand fitted as an attachment in the corners at one end thereof, saidguideblocks being-arranged for engagement against a projection beyondthe portion of the object engaged by the clamping means.

4. In a machine of the class described, a supporting-frame havingseparategnide members, and separate cutter-carriages slidably mountedupon the guide members and movable in planes at right angles to eachother,

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and each of Which carriages is provided with l gularly-related guides,separate cutter-carriages arranged perpendicularly to the guides andfmovable thereon in planes at right angles to each other, and a critterassociated with each carriage and having an independent adjustablemovement thereon in different directions.

6. In a gaining machine, a supporting- .frame having separate guidemembers disposed at right angles, separate cutter-carriages slidablymounted upon the separate guide members, and each of which is providedwith a base memberdisposed transversely of the frame, and a cutter foreach carriage havingan independent movementboth longitudinally andtransversely of said hase member.

7. In a gaining machine, a supportingframe havingright-angularly-related separate guide members, separate cuttercarriagesslidably mounted upon the separate guide members, independent means forregulating the adjustment of each carriage, a cutter carried by eachcarriage and having an independent movement both transversely andlongitudinally thereof, adjustable stops above and below the cutter forlimiting the movement thereof longitudinally with reference to thecarriage, and an adjustable stop or gage carried by the cutter andcooperating with the carriage forlimiting the movement of the ou tier ina direction transverse of the carriage.

8. In a gaining machine, a supportingframe havingseparat-e right-angularlyrelated guide members, separate cutter carriages slidablymounted upon the said guide members and each having a base memberperpendicularly to the guides, independent adjusting and regulatingmeans for each carriage, a cutter associated with the base member ofeach carriage and having an independent movement both longitudinally andtransversely with reference to the length of the cutter, gage-stopsadjustahly mounted upon the base member of each carriage and arranged tolimit the independent transverse movement of each cutter, and anadjustable gage mounted upon each cutter and arranged to gage theindependent longitudinal movement thereof.

9. In a gaining machine, a supportingframe havingseparateright-angularly-related guide members, separate carriages slidablymounted upon the guide members and each having a base member, a cuttercarried by the base member of each carriage and having alongitudinal andtransverse movement, and a cutter-actuator associated with each cutterand having a member shiftable upon the base member of the carriage toconform to the independent transverse adjustment of the cutter.

10. In a gaining-machine, a supportingframe having separateright-singularly-related guide members, separate cuttercarriagesslidably mounted upon the guide members and each having a base member, acutter carried by the base member of each carriage and havingindependent movement both longitudinally and transversely, and anactuator for each cutter comprising a bracket shiftably connected withthe base member and an actuating-screw carried by the bracket andcoperating With the cutter.

l1. In a gaining-machine, a supportingframe having oppositely-arrangedfront and end guide-bars disposed at right angles to each other andprovided with longitudinal gnideways or grooves, separate front and endcutter-carriages having slides engaging the gnideways of theirrespective guide-bars,each cutter-carriage being further provided with abase member disposed transversely of the frame and provided at one sidewith a longitudinal slidcway, a cutter-carrying slide working Within theslideway of the base member of each carriage and having keys or gibs, acutter for each carriage having slots slidably interlocking with thekeys or gibs ofthe cutter-carrying slide, an independent actuatorcarried by each cutter and adjustable with the cutter, and gages forregulating the various adjustments of both cutters.

12. In a gainingmachine, a supportingframe, a front and au endcutter-carriage mounted upon the frame and movable in planes at rightangles to each other, each of said carriages having a cutter-carryingmember, and means for changing the angle of the cutter-carrying memberof one of the carriages.

13. In a gaining-machine, a supportingframe, a front and an endcuttercarriage mounted upon the frame and movable in planes at rightangles to each other, each of said carriages having a cutter-carryingmember, and means for changing the angles of the cutter-carrying memberof the end carriage.

14. In a gaining-machine, a supportingframe having separate guidemembers disposed at right angles to each other, separatecutter-carriages slidably mounted upon said guide members and movable inplanes at right angles to each other, the end cutter-carriage embodyinga jointed connection to permit of tilting adjustment for the basemember, and the separate right-angularly-related cutters respectivelycarried by the separate carriages.

l5. In a gaining-machine, a supportingframe having separaterightangularly-related guide members, cutter-carriages mounted upon theseparate guide members and each having a carriage-slide and acutter-carrying base member, the cutter-carrying base member of onecarriage having a jointed hinge connection with the slide therefor, astationary support also carried by the slide for the adjustable basemember, and an adjusting device carried by said stationary support andcooperating with the jointed base member.

In testimony whereof I affix my signature in presence of two Witnesses.

JOSEPH M. STRUBEL. tVitnesses:

HENRY E. COOPER, GERTRUDE S. ROY.

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